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-rw-r--r--gnu/packages/gcc.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/gnu/packages/gcc.scm b/gnu/packages/gcc.scm
index 862fdd79c3..c3a2d6256c 100644
--- a/gnu/packages/gcc.scm
+++ b/gnu/packages/gcc.scm
@@ -617,7 +617,7 @@ Go.  It also includes runtime support libraries for these languages.")
             "btver1" "btver2"                     ;AMD
 
             ;; psABI micro-architecture levels
-            "x86_64-v1" "x86_64-v2" "x86_64-v3" "x86_64-v4")))
+            "x86-64-v1" "x86-64-v2" "x86-64-v3" "x86-64-v4")))
 
 ;; Suitable '-march' values for GCC 12.
 (define %gcc-12-aarch64-micro-architectures